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Geologic units in Aransas county, Texas

Barrier island deposits (Quaternary) at surface, covers 45 % of this area

Barrier island deposits

Beaumont Formation, areas predominantly clay (Quaternary; Late Pleistocene) at surface, covers 19 % of this area

Beaumont Formation, areas predominantly clay

Alluvium (Holocene) at surface, covers 18 % of this area

Alluvium

Beaumont Formation, areas predominantly sand (Quaternary; Late Pleistocene) at surface, covers 13 % of this area

Beaumont Formation, areas predominantly sand

Barrier ridge and barrier flat deposts (Quaternary; Holocene) at surface, covers 4 % of this area

Barrier ridge and barrier flat deposts

Fill and spoil (Holocene) at surface, covers 2 % of this area

Fill and spoil